RAC-Hub/EXTENSIONS.md

Extensions

Over time, as various clients and servers for RAC were developed, users introduced their own protocol extensions. These additions were created independently of Mr. Sugoma and are designed to enhance the protocol's capabilities while maintaining compatibility with existing RAC versions.

User agents

User agents in RAC is the way how to get know from what client the message was sent. It works by just checking the message text throught regex.

Here are listed the most common clients, and their common names colors in the chat.

Client	Format	Regex	Color
bRAC	리㹰<{name}> {text}	\uB9AC\u3E70<(.*?)> (.*)	green
CRAB	═══<{name}> {text}	\u2550\u2550\u2550<(.*?)> (.*)	light red
Mefidroniy	°ʘ<{name}> {text}	\u00B0\u0298<(.*?)> (.*)	light magenta
cRACk	⁂<{name}> {text}	\u2042<(.*?)> (.*)	gold
Snowdrop	ඞ<{name}> {text}	\u0D9E<(.*?)> (.*)	light green
clRAC	<{name}> {text}	<(.*?)> (.*)	cyan

Server info packet

Client sends:

• Byte 0x69

Server sends:

• (nothing or closes socket if server doesn't support this feature)
• Protocol version:
  • Byte 0x01 for RACv1
  • Byte 0x02 for RACv1.99
  • Byte 0x03 for RACv2
• Server name